1. Backup Important Data: Prior to initiating the upgrade, it is essential to backup important data. You can utilize an external hard drive, Cloud services, or other media to backup files, databases, and configuration files.
2. Check Hardware Compatibility: Ensure that your hardware is compatible with Ubuntu 20.04. Information regarding minimum hardware requirements and compatibility can be found on the official Ubuntu website.
3. Update Existing System: Before proceeding with the main upgrade, it is recommended to update all existing packages of Ubuntu 18.04 to the latest versions. This ensures a smooth upgrade process. Execute the following commands in the terminal:
sudo apt update
sudo apt upgrade
sudo apt dist-upgrade
Upgrade Process
1. Configure Update Manager: Ubuntu provides the Update Manager tool for system upgrades. Prior to initiating the upgrade, this tool needs to be prepared. Open the terminal and execute the following command to update the Update Manager to the latest version:
sudo apt install update-manager-core
2. Run the do-release-upgrade tool: Now that your system is prepared, execute the following command in the terminal to initiate the upgrade process:
sudo do-release-upgrade
If you are using a server without a graphical interface, use the command sudo do-release-upgrade -d.
3. Follow On-Screen Instructions: During the upgrade, the system may prompt you with various questions regarding the replacement of configuration files, removal of unused packages, and other actions. It is recommended to carefully read the on-screen messages and select options as necessary.
After the Upgrade
1. Check the System: After completing the upgrade, restart the system. Upon restart, log in and verify that all applications and services are functional. You can execute the following command to verify the system version:
lsb_release -a
2. Reinstall and Configure Applications: Some applications may require reinstallation or additional configuration to be fully compatible with Ubuntu 20.04.
3. Update the System: Finally, execute the following commands to ensure that your new system is fully updated:
sudo apt update
sudo apt upgrade
Upgrading to Ubuntu 20.04 LTS brings numerous enhancements, including a newer kernel, better hardware support, updated applications, and security improvements. Follow this guide to ensure a smooth and successful upgrade of your system.
